Artwork: Happy World (Ik-Joong Kang)

From nycsubway.org

The Korean-American artist Ik-Joong Kang is primarily
known for mosaic-like installation works made up of 3 x 3-in. squares
representing various aspects of his life. Happy World consists
of hundreds of icons and symbols hand painted on small ceramic
tiles. Born in Korea in 1960, Kang has lived and worked in New York
City since 1984. He received fine arts degrees from Hong-Ik University
in Seoul and Pratt Institute in Brooklyn. Sources:
mta.info,
ikjoonkang.com,
artnet.com.